wand

问题 Good morning, After a lot of attemps running from wand.image import Image I get the following error: Traceback (most recent call last): File "C:\Users\XXXXX\PycharmProjects\PDF_convert\venv\lib\site-packages\wand\api.py", line 180, in <module> libraries = load_library() File "C:\Users\XXXXX\PycharmProjects\PDF_convert\venv\lib\site-packages\wand\api.py", line 135, in load_library raise IOError('cannot find library; tried paths: ' + repr(tried_paths)) OSError: cannot find library; tried paths:

问题 Good morning, After a lot of attemps running from wand.image import Image I get the following error: Traceback (most recent call last): File "C:\Users\XXXXX\PycharmProjects\PDF_convert\venv\lib\site-packages\wand\api.py", line 180, in <module> libraries = load_library() File "C:\Users\XXXXX\PycharmProjects\PDF_convert\venv\lib\site-packages\wand\api.py", line 135, in load_library raise IOError('cannot find library; tried paths: ' + repr(tried_paths)) OSError: cannot find library; tried paths:

问题 I'm trying convert to white or transparent some rectangles areas within the below image. I'm able to make it with ImageMagick with the following command, that first makes transparent desired colors and finally convert to black the rest with "negate". convert input.png \ -transparent '#4B8DF8' \ -transparent '#27A9E3' \ -transparent '#2295C9' \ -transparent '#E7191B' \ -transparent '#C91112' \ -transparent '#28B779' \ -transparent '#17A769' \ -transparent '#852B99' \ -transparent '#751E88' \

问题 Follow up question from Replacing a quadrilateral with a square generated from PIL.QUAD I am able to overlay the image perfectly, but want ways to blur just the edges. I took a look at composite_channel and the list of operators (http://docs.wand-py.org/en/0.4.1/wand/image.html#wand.image.COMPOSITE_OPERATORS) and while luminize seems to work well as an operator, it still does not blur the edges. Are there ways to do this with wand ? 来源： https://stackoverflow.com/questions/61276080/blending

问题 I'm having trouble converting a single page pdf (CMYK) to a jpg (RGB). When I use the code below, the colors in the jpg image are garish. I've tried reading through the Wand docs, but haven't found anything to simply replicate the original image. The official ImageMagick docs themselves are still rather opaque to me. For my situation, it is necessary to do this within a python script. Below is the relevant code snippet. with Image(filename = HOME + outFileName + ".pdf", resolution = 90) as

问题 I'm having trouble converting a single page pdf (CMYK) to a jpg (RGB). When I use the code below, the colors in the jpg image are garish. I've tried reading through the Wand docs, but haven't found anything to simply replicate the original image. The official ImageMagick docs themselves are still rather opaque to me. For my situation, it is necessary to do this within a python script. Below is the relevant code snippet. with Image(filename = HOME + outFileName + ".pdf", resolution = 90) as

问题 Is there a -level function in wand-py to adjust the levels of an image? How do I access this ? 回答1: The -level operation, or MagickLevelImage C-API, does not currently exists in wand-py. However, wand.api makes adding support for this method very easy. Example extending the wand.image.Image class: from ctypes import c_void_p, c_double, c_int from wand.api import library from wand.image import Image # Define C-API method signatures library.MagickLevelImage.argtypes = [c_void_p, # wand c_double

问题 I have below snippet which creates a gif. This snippet is derived from hints here. The snippet creates an empty frame and frames have irregular delay between them. Notice delay between nothingness and first frame, and then second frame quickly appears. Why this happens? I had to create Image of particular size before hand because, wand is not resizing canvas according to maximum sized sequence. I have to find a way to sort that out as well. def render(self): # map anim gif wand = Image2(width

问题 I have below snippet which creates a gif. This snippet is derived from hints here. The snippet creates an empty frame and frames have irregular delay between them. Notice delay between nothingness and first frame, and then second frame quickly appears. Why this happens? I had to create Image of particular size before hand because, wand is not resizing canvas according to maximum sized sequence. I have to find a way to sort that out as well. def render(self): # map anim gif wand = Image2(width

问题 I want to convert the first page of pdf to an image. And my below code is working well in my local environment: Ubuntu 18. But when I run in the docker environment, it fails and raises: wand.exceptions.WandRuntimeError: MagickReadImage returns false, but did raise ImageMagick exception. This can occurs when a delegate is missing, or returns EXIT_SUCCESS without generating a raster. Am I missing a dependency? Or something else? I don't know what it's referring to as 'delegate'. I saw the